Steel Filing Cabinets for General Office Purposes - Specification

IS 3313: Scope & Key Specifications for Steel Filing Cabinets

Scope (Clause 1.1):

• Specifies materials, sizes, construction, finish, and tests for steel filing cabinets intended for general office use.

Key Dimensions & Tolerances (Clause 4.1 & Table 1)

Minimum Clearances for Recesses/Openings:

• Top clearance: 20 mm
• Side clearance: (not specified in snippet, typically 10-20 mm)
• Depth clearance: 5 mm

Additional Notes:

• Dimensions include pedestal height.
• The standard also covers material grades, welding specs, and finish tests (e.g., scratch hardness).
• Rounding off numerical values per IS:2-1960.

flowchart LR
    A[Steel Filing Cabinets] --> B[Two-Drawer: 750x700x470 mm]
    A --> C[Three-Drawer: 1080x700x470 mm]
    A --> D[Four-Drawer: 1380x700x470 mm]
    B & C & D --> E[Minimum Clearances]
    E --> F[Top: 20 mm]
    E --> G[Depth: 5 mm]
    E --> H[Side: (as per design)]

For detailed welding, finishing, and testing procedures, refer to clauses 7, 8, and related IS codes cited within IS 3313.

IS 3313: Materials Key Points

• Mild Steel Sheets:
  Conform to Grade 0 of IS 513:1973 or IS 1079:1973 (Clause 2.2).

• Scratch Hardness Test (Clause 8.1):

  • Sample size: Mild steel plate 150 x 50 mm, thickness 0.315 mm.
  • Test as per IS 101:1964 (15.1).
  • No scratch exposing bare metal should appear.

• Phosphate Treatment:

  • For corrosion protection of iron and steel.
  • Follow codes of practice and specifications for primers, fillers, and enamels (various referenced standards).

• Dimensions & Tolerances (Clause 4.1 & Table 1):

  Type	Height (mm)	Depth (mm)	Width (mm)
  Two-Drawer	750	700	470
  Three-Drawer	1080	700	470
  Four-Drawer	1380	700	470

• Clearance Requirements:

  • Top clearance: 20 mm
  • Side clearance: (not specified in snippet)
  • Depth clearance: 5 mm

Summary:
Use mild steel sheets per IS 513/1079, ensure scratch hardness test compliance, apply phosphate treatment for corrosion resistance, and adhere to specified cabinet dimensions with minimum clearances for installation.

IS 3313: Steel Filing Cabinets – Key Dimensions & Specifications

1. Types of Filing Cabinets (Clause 3.1)

• Two-drawer
• Three-drawer
• Four-drawer

2. Overall Dimensions (Clause 4.1, Table 1)

3. Minimum Clearances for Recess Installation (Clause 4.1 Note)

• Top clearance: 20 mm
• Side clearance: (value not specified in excerpt)
• Depth clearance: 5 mm

4. Drawer Specifications (Clause 5.3)

• Drawer steel sheet thickness ≥ 0.63 mm
• Drawer front: box type with back cover
• Side arrangements for slide seating and locking mechanism to stop full push-in

Summary Diagram (Filing Cabinet Types & Dimensions)

graph TD
    A[Filing Cabinets] --> B[Two-Drawer]
    A --> C[Three-Drawer]
    A --> D[Four-Drawer]

    B -->|Height: 750 mm| E[Dimensions]
    C -->|Height: 1080 mm| E
    D -->|Height: 1380 mm| E

    E -->|Depth: 700 mm| F[Width: 470 mm]

Use these dimensions and clearances for design, installation, and manufacturing of filing cabinets as per IS 3313.

IS 3313: Dimensions and Tolerances for Steel Filing Cabinets

Key Dimensions (Table 1, Clause 4.1)

Tolerances (Clause 4.3)

• ±5 mm maximum variation allowed in specified dimensions.

Minimum Clearances for Recesses (Note under Clause 4.1)

• Top clearance: 20 mm
• Side clearance: (value missing in context, typically 5-10 mm)
• Depth clearance: 5 mm

Summary

• Ensure cabinet dimensions conform within ±5 mm tolerance.
• Allow minimum clearances for installation: 20 mm (top), 5 mm (depth), side clearance as per site or standard practice.
• Dimensions vary by drawer type; height increases with more drawers, width and depth remain constant.

graph TD
    A[Filing Cabinet] --> B[Two-Drawer: 750x470x700 mm]
    A --> C[Three-Drawer: 1080x470x700 mm]
    A --> D[Four-Drawer: 1380x470x700 mm]
    B --> E[±5 mm Tolerance]
    C --> E
    D --> E
    E --> F[Clearances: Top 20 mm, Depth 5 mm, Side ~5-10 mm]

This concise data aids design, fabrication, and installation per IS 3313 standards.

IS 3313: Construction Requirements for Steel Filing Cabinets

Key Specifications & Dimensions (Clause 4.1, Table 1)

Minimum Clearances for Installation

• Top clearance: 20 mm
• Side clearance: (not specified, refer to cabinet type or order)
• Depth clearance: 5 mm

Construction & Finish (Clause 11.1.1)

• Alternative construction/finish methods must be clearly specified in the order.

Material & Testing Highlights

• Scratch Hardness Test: Mild steel plate (150 x 50 mm, 0.315 mm thick) must show no bare metal scratch (Clause 8.1).
• Surface treatments include phosphate treatment for corrosion resistance.
• Painting specifications include primers and enamel coatings as per referenced IS standards.

Summary Diagram: Filing Cabinet Dimensions & Clearances

graph TD
    A[Cabinet] --> B[Height: 750-1380 mm]
    A --> C[Depth: 700 mm]
    A --> D[Width: 470 mm]
    A --> E[Clearances]
    E --> F[Top: 20 mm]
    E --> G[Depth: 5 mm]
    E --> H[Side: per order]

For detailed welding, finishing, and material specs, refer to corresponding IS standards cited in IS 3313.

IS 3313 - Assembly and Welding Key Points

Welding Methods (Clause 6.2)

• Welding shall conform to:
  • Gas welding: IS 1323-1966 (Oxy-acetylene welding code of practice)
  • Arc welding: IS 816-1969 (Metal arc welding code of practice)
  • Spot welding: IS 819-1957 (Resistance spot welding code of practice)

Electrodes (Clause 2.1)

• Electrodes must conform to:
  • Gas welding: IS 1278-1972
  • Arc welding: IS 814 (Part 2)-1974
  • Spot welding: IS 4972-1968

Assembly (Clause 6.1)

• Components assembled by bolting, welding, or riveting.

Typical Welding Specifications Summary

Additional Notes

• Follow dimensional tolerances and clearances as per Clause 4.1 for assemblies.
• Use appropriate filler rods/wires and electrode types as per relevant IS specifications.
• Welding quality and inspection should comply with the respective IS codes for structural integrity.

flowchart TD
    A[Components] --> B{Assembly Method}
    B -->|Bolting| C[Bolted Joint]
    B -->|Welding| D[Gas / Arc / Spot Welding]
    B -->|Riveting| E[Riveted Joint]
    D --> F[IS 1323 (Gas)]
    D --> G[IS 816 (Arc)]
    D --> H[IS 819 (Spot)]

This ensures compliance with IS 3313 for structural filing cabinets assembly and welding.

IS 3313: Surface Treatment and Finishing - Key Points

1. Surface Preparation & Phosphating (Clause 7.2)

• Pickling: All mild steel parts are pickled first.
• Phosphating: Apply phosphate coating conforming to Class C of IS 3618-1966.
• Process: Follow phosphating application per IS 6005-1970.
• Putty: Use putty conforming to IS 110-1968 for surface filling.
• Primer: Aluminium primer as per IS 5660-1970.

2. Performance Requirements (Clause 8)

3. Relevant IS Codes for Finishing Materials

• Phosphate Treatment: IS 3618-1966, IS 6005-1970
• Putty: IS 110-1968
• Aluminium Primer: IS 5660-1970
• Paints & Enamels: Various IS codes for ready mixed paints and enamels (refer to IS 101-1964 for test methods).

flowchart LR
    A[Pickling] --> B[Phosphating (IS 3618 Class C)]
    B --> C[Putty Application (IS 110)]
    C --> D[Aluminium Primer (IS 5660)]
    D --> E[Paint/Enamel Application]
    E --> F[Performance Tests]
    F --> G{Scratch Hardness Test}
    F --> H{Flexibility & Adhesion Test}

Summary:
Use phosphate treatment Class C after pickling, apply putty and aluminium primer as per IS codes, then finish with paint/enamel. Test samples (150x50

IS 3313: Performance Requirements of Finish

Key Specifications & Tests:

• Sample size for tests: Mild steel plate, 150 x 50 mm, thickness 0.315 mm finished as per clause 7.

1. Scratch Hardness Test (Clause 8.1)

• Conducted as per IS 101:1964, Clause 15.1.
• Requirement: No scratch exposing bare metal should appear on the test sample.

2. Flexibility and Adhesion Test (Clause 8.3)

• Conducted as per IS 101:1964, Clause 16.
• Requirement: Paint film must show no damage, detachment, or cracking under 10x magnification after testing.

Additional Notes:

• Finish details must be agreed between purchaser and manufacturer (Clause 7.3).
• Alternative finishes or construction methods must be clearly specified in the order (Clause 11.1.1).
• Referenced IS codes for paint and phosphating specifications ensure corrosion protection and paint quality.

Summary Table:

This ensures durable, corrosion-resistant, and well-adhered finishes on mild steel components.

IS 3313: Drawer Suspension & Operation Key Points

Types of Drawer Suspension (Clause 5.6)

• Ball-bearing suspension
• Solid-roller suspension
• Ball-bearing-roller suspension

These ensure full-depth withdrawal of the drawer.

Performance Criteria (Clause 9.1.1)

• Suspension slides must operate smoothly without distortion or cracks.
• Tested for 50,000 cycles at 1,000 cycles/hour.
• Load: 30 kg evenly distributed (excluding drawer weight).
• One cycle = one full opening + one full closing.

Testing Procedure (Appendix A, Clause 9.1.1)

• Test apparatus simulates drawer operation.
• Ensures durability and smooth operation under specified load and cycles.

Summary Table: Drawer Suspension Requirements

flowchart LR
    A[Drawer Suspension Types] --> B[Ball-bearing]
    A --> C[Solid-roller]
    A --> D[Ball-bearing-roller]
    E[Test Procedure] --> F[Load 30 kg]
    E --> G[50,000 Cycles]
    E --> H[1,000 cycles/hour]
    F & G & H --> I[Check for smooth operation & no damage]

This ensures drawer slides meet durability and operational smoothness per IS 3313.

IS 3313: Packing Specifications for Steel Filing Cabinets

Key Clause on Packing (Clause 10.1)

• All components must be packed to prevent any damage during transit.

Dimensions & Clearances (Clause 4.1 and Table 1)

Minimum clearances for recesses/openings:

• Top: 20 mm
• Each side: (not explicitly given, but typically 10-20 mm)
• Depth: 5 mm

Additional Notes:

• Packing should ensure no deformation or surface damage.
• Components like drawers should be secured to avoid movement.
• Use appropriate cushioning materials (foam, corrugated sheets).
• Clearly mark fragile parts.

Summary Diagram of Packing Concept

flowchart LR
    A[Components] --> B[Packing Material]
    B --> C[Protection from Impact]
    B --> D[Prevention of Movement]
    C --> E[Foam/Corrugated Sheets]
    D --> F[Securing Drawers & Parts]
    E & F --> G[Damage-Free Transit]

This ensures safe delivery of filing cabinets as per IS 3313 requirements.

IS 3313 - Information to be Supplied by the Purchaser (Clause 11.1)

The purchaser must provide the following details with the order:

• Type required: Specify two, three, or four-drawer filing cabinet.
• Desired colour of finish: To ensure correct paint or coating.
• Drawer mechanism: Whether drawers should have clutch compressor plate or cradle strips.
• Corner finish: Indicate if corners should be rounded or sharp.

Key Dimensions (Clause 4.1, Table 1)

Note: Minimum clearances for recesses:

• Top clearance: 20 mm
• Side clearance: (not specified, see IS)
• Depth clearance: 5 mm

Packaging (Clause 10.1)

• All parts must be packed to prevent damage during transit.

Finish (Clause 7.3 & 8)

• Finish details to be mutually agreed.
• Performance requirements of finish must comply with IS standards.

flowchart TD
    A[Purchaser] -->|Supply order with info| B[Supplier]
    B --> C{Order details}
    C -->|Type| D[Two/Three/Four drawer]
    C -->|Colour| E[Finish colour]
    C -->|Drawer Mechanism| F[Clutch plate or Cradle strips]
    C -->|Corners| G[Rounded or Sharp]

This ensures clarity and compliance with IS 3313 specifications.

IS 3313 - Marking Specifications Summary

Key Marking Requirements (Clause 12.1 & 12.1.1)

• Manufacturer's Mark: All steel filing cabinets must bear a mark identifying the manufacturer.
• ISI Certification Mark: Optional marking indicating compliance with IS standards, governed by ISI Certification Marks Act.

Dimensions & Tolerances (Clause 4.1 & Table 1)

• Minimum clearances for recesses:
  • Top clearance: 20 mm
  • Side clearance: 5 mm
  • Depth clearance: 5 mm

Scratch Hardness Test (Clause 8.1)

• Sample size: 150 x 50 mm, thickness 0.315 mm.
• No scratch revealing bare metal allowed per IS:101-1964, Clause 15.1.

flowchart LR
    A[Steel Filing Cabinet] --> B[Mark with Manufacturer's ID]
    A --> C[Optional ISI Certification Mark]
    A --> D[Dimensions per Table 1]
    A --> E[Scratch Hardness Test on Sample]

Summary: Marking must ensure traceability; dimensions and clearances are standardized; quality verified by scratch hardness test and optional ISI mark.

IS 3313: Drawer Suspension Test - Key Details

Test Procedure (Clause 9.1.1 & Appendix A)

• Load: 30 kg evenly distributed (excluding drawer weight)
• Cycles: 50,000 cycles (one opening + one closing = 1 cycle)
• Cycle Rate: 1,000 cycles/hour
• Acceptance: No distortion, cracks, or operational failure; smooth operation throughout

Apparatus Components (Fig. 2)

• Reciprocating Arm: Connects to drawer for simulated opening/closing
• Oscillating Slotted Arm: Adjustable stroke length via slot position
• Pneumatic or Hydraulic Cylinder: Powers the reciprocating motion

Summary Table

Key Formula for Cycle Time

[ \text{Test Duration (hours)} = \frac{50,000 \text{ cycles}}{1,000 \text{ cycles/hour}} = 50 \text{ hours} ]

flowchart LR
    A[Hydraulic/Pneumatic Cylinder] --> B[Oscillating Slotted Arm]
    B --> C[Reciprocating Arm]
    C --> D[Drawer Under Test]

This setup simulates drawer motion under load to verify durability and smooth operation as per IS 3313.